Claim · model-written summary
K requirement decreased from 2.14 to 1.74 kg as yield rose.
- Outcome
- K requirement per 100 kg graine1
- Direction
- decreasee0
- Value
- 2.14 to 1.74 kge0
- Qualifier
- increase of the harvest index and stem potassium concentrations, and the decline in leaf potassium concentrationse0
- Comparator
- yielde0
Not reportedTaxon
Verbatim
e0“showing a decrease from 2.14 to 1.74 kg when the yield increased from < 7.0 t hm-2 to > 11.0 t hm-2, which was attributed to the increase of the harvest index and stem potassium concentrations, and the decline in leaf potassium concentrations”
e1“The average K requirement per 100 kg grain was 1.89 kg, which was negatively correlated with grain yield”
Title
Yi CHENG; Peng LIU; Yu-Wen LIU; et al. ACTA AGRONOMICA SINICA 2019. doi:10.3724/sp.j.1006.2019.93004
Other claims from this paper (14)
- Observation Yield per plant had a normal distribution and ranged from 141.55 to 246.99 g plant-1.
- Observation Biomass per plant had a normal distribution and ranged from 197.68 to 389.92 g plant-1.
- Observation 1000-kernel weight had a normal distribution and ranged from 226.58 to 413.76 g.
- Observation Grain yield had a normal distribution and ranged from 5.84 to 13.41 t hm-2.
- Association Average N requirement was 1.95 kg per 100 kg grain and declined with increasing yield.
- Association N requirement fell from 2.15 to 1.96 kg across the first stated yield groups.
- Association N requirement fell from 1.96 to 1.84 kg across the next yield groups.
- Association N requirement per 100 kg grain stabilized above 11.0 t hm-2 yield.
- Association Average P requirement was 0.97 kg per 100 kg grain and negatively correlated with yield.
- Association P requirement declined from 1.07 to 0.92 kg as yield rose.
- Association Average K requirement was 1.89 kg per 100 kg grain and negatively correlated with yield.
- Observation Main varieties had mean grain yield of (8.91±1.23) t hm-2.
- Observation N, P2O5, and K2O requirements per 100 kg grain were (1.95±0.24), (0.97±0.11), and (1.89±0.28) kg.
- Association Total plant N, P, and K requirement increased with grain yield.